Chevrolet Chevelle SS 454 LS6 – $1.2 million
Chevrolet Chevelle has always been a very popular muscle car, and its combination of affordable price, excellent design, and powerful engines was a hit with buyers. In 1970, Chevrolet offered an expanded line of engines, including the famous 454 V8 big blocks. The regular version was called LS5, and it was very powerful, but there was an even stronger LS6 variant which was installed in just 3,700 cars. The LS-6 had almost racing compression of 11.25:1 and used a bigger carburetor and much stronger engine internals. It was rated at 450 HP, but it is more likely that it produced over 500.